Means for regulating the supply of fuel to burners.



fial 888L243. K P'ATENTBD MAX 19a... 1908,,-

.j-L MP. ans FOR REeULA I-m- THE-SUPPLY 0F FUEL TO BURNERS. i

APPLICATION FILED JULY 27. 1901.

1 .lbnsses:

Inventor Hermann Lamp.

:15 feed the fuel to the burner.

' 35to to assist in starting.

l UNITED STATES rarnnr oFFIo ilERMANN unit. or LYNN, MASSACHUSETTS,ASSIGN'ORJ TO GENERAL ELECTRIC COMPANY,;

A CORPORATIbN OF Nl-JW YORK.

MEANS FOR REGULATIN G THE SUPPLY OE FUEL TO BURNERS.

4 chus'etts, have invented certain new and useful Improvements in Meansfor Regulating the Supply of Fuel to Burners, ofwhieh the following 1s aspecification.

When atlash boiler is heated by liquid fuel supplied by a pun ipoperatedby the engines,

' some means "18 necessary for maintaining a pilot lightwhen the enginestops: usually a- -small hand pump to forceair into the fuel "tank andthus create sufficient pressure to I Instead of a fuel feed pump. thehand pump may be used to maintain an air-pressure approximately fiftyounds er-'squareinch in the'fuel tank. the ow-of rel being cont-rolledautomatically by the boiler pressure. "There are certainpracticalobjeetions to these'systems of fuel supply-and the object of myinvention is to provide asystem which is automatic in its action and 15free from all objections.

- In the accompanying drawing I have-illus- 'triited"diagrammatically anembodimentof -'n \y'1nvent1on. v

' Referring tothe drawing by reference nu- -merals.'1 represents themain fuel tank which .30 is always'in free communication with the air.

"and is so situatedthat fuel will flow therefrom'by gravitv to theburner. The burner is not ordinarily supplied with fuel-under gravityfeed, but sufficient fuel will flowthere- By reason of the- -main tankbeing subjected to atmosphericpressure only I can add fuel to the supplyat- "any time without in any way changing the condition of the fire. anddanger from fire .40 caused by leaks is reduced to a minimuinI Situatedat some convei'iientplace and preferably at a somewhat lower point thanthe fuel tank. is an energy-storing device taking. in the presentillustration. the form of an auxiliary tank or chamber 2. of smallcapacity containing air under. pressure. and having a small openingconnectingit with the. This chamber is (ltSlfIiIGtl to feed fuel pipe.fuel to the burner when the automatic pump is' idle. such for example.-as would l e the case when the vehicle is standing still with the firebanked. lhe chamber also assists Specif cation of Letters Patent.Application filed July 27, 1901. Serial No. 69,903.

PatentedMay 19, 1908; :2

in furnishing fuel to the burner when for-anyreason the pump strokesareverv slow? The chamber is provided with a valve 2" cap like anordinary bicycle tiresotlia't'an initial pressure maybe given tlie-reto'I may.,

use if desired achamber havingja permanentair pressure therein. I

. The bunier'conslsts of avaporizer 3,., ti'.j6o

nozzle 4, and a baffling plate 5. In ardent-o;

clean the nozzle of the burner, a needle 6, is provided which isactuated by the'lever. 7 a

et-ween the auxiliary fuel tank 2'.=;t]1i tl the; burner is a fuelcarryingcomiection S .'.\'vliich"t5 connection includes the adjust-ableregula ing valve 9. The connection 5 shunts or b; passes the pum .10 andregulator so that fuel can be supp ied to the burner independ-'entlythereof.

- 9 I p {'70- 1 he air prcssuregin the auXiIiary-tankn' aj v e that-1sdesired: fronrthirty to;

be a nythinfifty pounds will be found to he satisfa-ctor The pressure inthe pipe 8 will be theisameiisthat of the tank. while thepressure-iifthe pipe between the-valve 9 and .the burrier may be reducedto anysuitable amount. prefer-' ably from three to five pounds. In otherwords. the valve is opened just enouglif -to permit suffic-ient fuel toflow through it; -',to keep the fire in a banked condition.- and. b v'making the auxiliary tank of the properai capacity. this low firecan'bemaintained for" a considerable time: for example,'a-n hour.

' An automatic pump-10 is provided'which S5 is driven from the engine 11by means of a belt or chain 12 and the crank disk 13; The pump is of theordinary sin le acting type, and is controlled by the va ves 14 and 15,-which permit fluid to flow'in the direction of the arrows but not in thereverse directions Between the fuel tank 1 and thepump is a. Q

connection 16. containing a small regu tingvalve 17. This'valve is setto give a definite opening and performs no part in the ordinaryregulation. but is closed when it is desired to leave the vehicle forany considerable length of time. Extending between the pump and;- theburner is a cormeetion lSywhich contains v a check valve 1! permittingthe fuel to flow. .100 in the direction of the arrows but not in the?reverse direction. and aregulatingvalve 20 The latter is set to give therequired-.t;) penin'g and performs no part in the or(li n ry. -regula;

-which is included in one of the said connec- I thel pump, and a valvebetween the, pump tion of a main fuel tank, a burner, a pump,- a

plurality ofseparate supply connections arranged in multiple between andconnecting the pump and the burner, an auxiliary tank tions and containsfuel under an initial pressure for supplying the burner when the pump isidle, and an automatic regulator which is included in another of theconnections and controls the delivery of the pump.

11 In a supply system, the combination of a burner, a main fuel tankholding "fuel at substantially atmospheric pressure, ower driven pumpconnected with the tan and; the burner for increasing the pressure ofthe fuel supplied to-the latter, an auxiliary tank containing fuel underpressure, a separate. supply connection leading from the auxiliary tan 1for automatically supplying fuel to the burner when the pum is notoperating, a means for connecting t e auxiliary tank to a source of airfor placing it under an initial pressure, and valve in said supplyconnection for reducing the pressure of the fuel supplied by theauxiliary tank to the burner to maintain the flame in banked condition.

12'. In combination, a burner, a fuel supply tank, a connection betweenthe tank and the burner, a pump in said connection for delivering fuelto the burner at high pressure, an energy storing device, a connectionleading from the delivery side of the pump to the storing device, and athird connection independent of the aforesaid connections which extendsfrom the energy storing device to the burner to feed fuel to the latter.

13. In combination, a burner,a main fuel tank, an auxiliary fuel tank,-apump which is connected to the main tank and maintains the auxiliarytank under pressure, a direct connection between' the pump and theburner, and a controllable connection be tween the auxiliary tank andthe burner which shunts or by-passes the pump.

' 14. In a system of fuelcontrol, the combination of a burner, a mainfueltank, an auxiliary tank, a pump which is connectedto both tanks, aconnection fronrthe pump to the burner, a valve which prevents thereturn of fuel to the pump from the auxiliary tank, a separate fuelcarrying connection. between the auxiliary tank and the burner, and ameans in said latter connection for controlling the passage of fuel fromthe auxiliary tank. I

15. In combination, a boiler, a burner therefor, amain fuel tank, anauxiliary fuel tank containing fuel under pressure, a pump connectedwith the main tank and with the burner and delivering fuel underpressure from the tank to the burner, a, connection burner can besupplied'with fuel from said' auxiliary tank when for any reason thepump fail'sto deliver the proper amount of fuel-to.

the burner.

16. In a fuel system,,the

an auxiliary tank containing fuel under a higher elastic fluid pressureand .receiiring its supply of fuel from the main tank, ameans wherebythaauxiliary tank can be connected with a source of elastic fluidpressure to give combination of a mam tank containing fuel underlowpressure,

*itan initial pressure, a power pump and suitable connections thereforfor drawing fuel from the main tank and delivering it to the auxiliarytank under pressure, acheck valve preventing the flow of fuel from theauxiliary to the main tank, a conduit for conveying fuel from the pumpto the burner independently ofthe auxiliary tank, a separate conduit forconveying fuel from the auxiliary tank to the burner when the pump isidle or substantially so, and a regulator in the fuel circuit whichdetermines the pressure of the fuel supplied to the auxiliary tank.

17. In a system of fuel supply, the com bination of a burner, a main lowpressure tank, 'a power pump which receives fuel from the main tank, anauxiliary tank, connections through which the pump delivers to theauxiliary tankand to the burner, means in one connection by which fuelis held in the auxiliary tank under pressure for feeding the burner whenthe pump is idle and prevented nection, a device for permitting theauxiliary tank to be placed under air pressure, a bypass for the pump,and a regulator which controls the bypass and. regulates the amount offuel delivered to the burner.

' 18. In a motor -vehicle,':the combination of a propelling motor, aboiler for supplying motive fluid to the motor, a burner for the boiler,a fuel reservoir, a pump connected with the reservoir and deliveringfuel to the burner, means for operating the pump from the motor, apressure chamber connected with the pump di liveryv and with the burnerfor supplying fuel to the latter under certain conditions, a throttlingdevice controlling the supply of fluid to the motor, and means sensitiveto the pressure on the motor side the device for controlling the supplyof fuel to the burner independently of the speed of the motor.

19. In a motor vehicle, a propellipg motor for said vehicle, a boilerconnected with said for from flowing to the burner through saidconmaintain it ina banked condition so that it is ready for starting atany instant without thought on the part of the operator other than toadmit steam to the engine by throttle 78. in other words, a high and lowpressure fuel service are provided, the high pre sure service workingwhen the machineis rum'ung, and the low pressure when, it is standingstill, the two being arranged to coact in sucn a manner that when onestops or nearly stops the other starts into opera tion. When the systemis in full operation little or no fuel will flow through the valve 9,

because the pressure in pipe 18 is so much greater, but as the pressuredecreases in pipe l8, the flow of fuel from valve i-l increases.

in accordance with the provisitms of the patent statutes, I havedescribed the principle of operation of my invention, together with. theapparatus which I now consider to represent the best embodiment thereof;but I desire to have it understood that the apparatus shown is onlyillustrative and that the invention can be carried out by other means.What i claim new, and desire to secure by Letters l atentof the UnitedStates, is,

l. in combination, a boiler, a burner, a sourcef fuel supply, a pumpfol-increasing the pre sureof the fuel supplied to the burner,

an orig lied from the boiler and drivmgr nd pump, an energy storingdevice acted upon by the fuel pump which returns its energy to the fuelsyste n'r when the act on of the pump is decreased to a certain point orstopped, and a steam sure regulator for controlling the delivery of thepuntp which is actuated by the steam on the engine side of the throttle.

2. in combination, a boiler, a burner, a source of fuel supply, apumpfor increasing the fuel lnessure, an engine supplied from the boiler anddriving said pump, an auxiliary tank in the fuel circuit which containsair under pressure, a steam pressure regulator for governing the actionof the pump, and a connection extending from the regulator to a point inthe steam pipe, between the engine and the throttle, for admitting steamto the regulator.

3. ,ln continuation, a boiler, a burner for heating the boiler, anengine receiving steam from the boiler, 21 fuel pump driven by theengine, a supply tank containing fuel at atnulspheric pressure, anauxiliary tank cou- 'tion between the auxili 7 burner through whichfuelis supplied to mami taming fucl under pressure above that of theatmosphere, a stop valve between the tanks, a connection between theauxiliary tank and the burner, a valve in said connection. a bypassaround the pump, and a steamactuated regulator for opening and closingthe by-pass.

4. In combination, a boiler, a burner, a 'main fuel tank, anauxiliarvtank, a connechuh and the tain the burner flame in bankedcondition, a pump having a separate connection to the main tank and theburner for delivering fuel directly to the latter, a connection betweenthe delivery side of the pump and the auxfuel to maintain the flame inbanked condi-' tion, a pump connected with the main tank, a connectionbetween the pump and the burner which is separate from the firstmentioned connection for delivering fuel to the burner under normalpressure, and a connection from the pump to the auililiary tank forsupplying fuel thereto under a pressure above that of the atmosphere.

6. In combination, a boiler, a burner, a main fuel tank, an auxiliaryfuel tank containing fuel under a pressure greater than that of the maintank, a pump for maintaining the pressure of the auxiliary tank and alsofor supplying fuel. to the burner from the main tank, a connection fromthe auxiliary tank to the burner, a check valve to prevent fuel frombeing forced from the auxiliary into the main tank, a by-pass aroundthepump, and a steam pressure regulator for controlling said bypass.

7. In combination, a burner, a fuel pump, a main tank which supplies thepump, an auxiliary tank which receives its supply from the pump, aconnection from the pump to the burner, a. separate connection from theauxiliary tank to the burner, and means which permits the pump todeliver fuel to the auxiliary tank but prevents fuel in said tank fromflowing back to the first mentioned connection or to the main tank.

In a fuel supply system, the coi'nbination of a main fuel tank, aburner, a connection between the tank and the burner, a pump located inthe said connection for supplying fuel to the burner under highpressure, an auxiliary tank whose contents are under an initial ai rpressure, said tank receiving its supply from the pump, and a connectionleading from the auxiliary tank which is independent of the firstconnection andsupplies fuel to the burner at a pressure lower than thatdue to the pump.

In a fuel supply system, the-combination of a burner, a high pressurefuel pump which is connected with the burner to deliver fuel directlythereto, an auxiliary tank in which the fuel is maintar'ned under highpressure by the pump, a separate connection between theauxiliary tankand burner by which fuel is supplied to the latter at a pres suredifferent from that of the fuel supplied by the pump, a main fuel tankwhich supplies eda' ted to supply the burner under banked eesme I 5motor, .a burner, a fuelreservoir, a pump ass around said pump, anda'pressure regu- 10 connected with skid reservoir and delivering Paterin said by pass which regulates the to sa1d,-burner,-n1eans' to operatethe pump supply of fuelto the burner. i from said .motor, a pressurechamber 'c0n In witnesswhereof, I have hereunto set 5-neeted with thepump deliverywhich is my hand this 23d day of July, 1901. HERMAN N LEMP.con iti0ns,' a means which prevents fuel Witnesses: trom flowing fromthe chamber to the burner DUGALD McK. MQKILILOP, 'thlfbtlgh the pumpdelivery connection, aby JOHN J. WALKER.

